/**
 * 按键对应的code
 */
var keyCode=new Array();
keyCode[8]="BackSpace";
keyCode[9]="Tab ";
keyCode[12]="Clear";
keyCode[13]="Enter";
keyCode[16]="Shift_L";
keyCode[17]="Control_L";
keyCode[18]="Alt_L";
keyCode[19]="Pause";
keyCode[20]="Caps_Lock";
keyCode[27]="Escape";
keyCode[32]="space";
keyCode[33]="Prior";
keyCode[34]="Next";
keyCode[35]="End";
keyCode[36]="Home";
keyCode[37]="Left";
keyCode[38]="Up";
keyCode[39]="Right";
keyCode[40]="Down";
keyCode[41]="Select";
keyCode[42]="Print";
keyCode[43]="Execute";
keyCode[45]="Insert";
keyCode[46]="Delete";
keyCode[47]="Help";

//48-57
keyCode[48]="0";
keyCode[49]="1";
keyCode[50]="2";
keyCode[51]="3";
keyCode[52]="4";
keyCode[53]="5";
keyCode[54]="6";
keyCode[55]="7";
keyCode[56]="8";
keyCode[57]="9";


//65
keyCode[65]="A";
keyCode[66]="B";
keyCode[67]="C";
keyCode[68]="D";
keyCode[69]="E";
keyCode[70]="F";
keyCode[71]="G";
keyCode[72]="H";
keyCode[73]="I";
keyCode[74]="J";
keyCode[75]="K";
keyCode[76]="L";
keyCode[77]="M";
keyCode[78]="N";
keyCode[79]="O";
keyCode[80]="P";
keyCode[81]="Q";
keyCode[82]="R";
keyCode[83]="S";
keyCode[84]="T";
keyCode[85]="U";
keyCode[86]="V";
keyCode[87]="W";
keyCode[88]="X";
keyCode[89]="Y";
keyCode[90]="Z";


//F键
keyCode[112]="F1";
keyCode[113]="F2";
keyCode[114]="F3";
keyCode[115]="F4";
keyCode[116]="F5";
keyCode[117]="F6";
keyCode[118]="F7";
keyCode[119]="F8";
keyCode[120]="F9";
keyCode[121]="F10";
keyCode[122]="F11";
keyCode[123]="F12";
